mc9s12q128 Freescale Semiconductor, Inc, mc9s12q128 Datasheet - Page 130

• Manufacturer Part Number: mc9s12q128
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 4 Multiplexed External Bus Interface (MEBIV3)
130
CPU pipe info
IRQ interrupt
XIRQ interrupt
BDM tag info
Addr[19:0]
Data[15:0]
(Control)
Control signal(s)
Data signal (unidirectional)
Data signal (bidirectional)
Data bus (unidirectional)
Data bus (bidirectional)
REGS
mode
Figure 4-1. MEBI Block Diagram
ECLK CTL
PIPE CTL
TAG CTL
IRQ CTL
MC9S12Q128
BUS
EXT
CTL
I/F
Rev 1.09
ADDR
ADDR
DATA
ADDR
DATA
BKGD
PK[7:0]/ECS/XCS/X[19:14]
PA[7:0]/A[15:8]/
D[15:8]/D[7:0]
PB[7:0]/A[7:0]/
D[7:0]
PE[7:2]/NOACC/
IPIPE1/MODB/CLKTO
IPIPE0/MODA/
ECLK/
LSTRB/TAGLO
R/W
PE1/IRQ
PE0/XIRQ
BKGD/MODC/TAGHI
Freescale Semiconductor